Yohei Shimbori recently tweeted that the development team decided to hold a 33-man tournament amongst the staff. He has uploaded the finals of the tournament which is Hayate vs Hitomi. As far as I know, he did not tell which members of the staff were the finalists but they were two of the employees who worked on game balance. He says a lot of fun was had by the team, and that they may release a video of the event at a later time.
Yohei Shimbori said:I was all ready to win the thing but... I lost to one someone who was working on game balance (and fought against the Dengeki staff a little while back). I'll just chalk it up to me selecting random. That's my reason (excuse) for losing! The final was between two people who both worked on game balance. And how do you think those people fighting for real after all their work felt? Maybe we'll make a movie of that later. They were both used to DOA5's fighting style. They sidestepped and bluffed Critical Bursts and did lots of other stuff that only comes with practice.
I'm pretty sure the staff will buy DOA5 and play online. I know I will. So if you come across someone who fights like be a developer, be nice and play with us. Then beat us. We'll be tweeting some new info about Dead or Alive 5 this week! Stay tuned!